I am impressed with how quickly my 3mths supply came. As Nattokinase works over time, and I take a few other supplements, I can't be sure my sense of well-being relates solely to natto, but I believe in the product, the quality and the company's ethos, so I will be continuing to take it into the future. I have regular blood tests, so will know in 3 more months whether my cholesterol levels have been positively impacted.